Flow rates for taps are expressed on the water rating label in litres per minute (L/min).
The most water efficient taps have a 6 star WELS rating demonstrating a flow rate of 4.5 litres per minute or less.
Tapware products are tested for:
• endurance of tap components 50,000 on/off cycles
• hydraulic strength
• torque of joints
• water consumption
• water temperature test from hot to cold and back again every 55 cycles.